At a glance you may think this is a draw. White wins!

[Terry McCracken]

A beautiful position that illustrates the advantage that a single tempo can give. Then zugzwang and black is lost. The key to this position is looking at it yourself, before using an engine. It's very instructive! Some very strong engine(s) also struggle here. Komodo CCT after 5 min cannot see the win on my machine.



[d]4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1

Humans cannot calculate all possible lines so how looking at it by myself can help?

seeing the solution does not help to be able to practically win it because black can practically play a different move.

For example 1.Ke2 Ke7 or 1.Ke2 a5 or 1.Ke2 Kd7 2.Kf3 Kc6

Impossible to calculate all lines and if humans can understand that white wins then I would like to read some strategy that tells me what to do in every position and not a variation.

Hi Uri, I did not say calculate it youself. I said look at the position yourself without an engine. You of all people I thought would understand this. LOL, I guess not!. I studied and learned the secrets of this postion without an engine. I wanted people to move the pieces and try to understand this position. I guess this was the wrong place to post this.

There are things to be learned here. For example, Botvinnik used the term "trousers" (two legs) when discussing two passed pawns with at least one file in between them. A common position happens with the white a and c pawns on the same rank somewhere with the black king two ranks in front. If the pawns are on a4/c4, and king at b6, if black plays Kb5 threatening the c4 pawn, white calmly plays a5 and black must retreat to prevent that pawn from queening. Repeat until black can't give way any more. If there is a tempo problem (there are LOTS of tempo problems in the full game) white has the b pawn that can advance to "lose" a tempo and avoid zugzwang. Of course, on the other side of the board, the SAME game goes on in reverse. But white has that "move in his pocket" since he plays first, and he wins each and every zugzwang battle that occurs, unless he loses that tempi somehow.

I found it quite educational when we were fiddling with this back in the late 90's on ICC...

There are SO many positions where black will say "If I just had one extra move, or if I could just lose one tempi..." Strangely, it always seemed (to me) to be easier for white to lose than for black, given that mistakes are made, because white seems to have some sort of "first-move advantage" that he struggles to not give away, making it easier to do so.

Here's a sort of similar "two simultaneous games on one board" position from Reti:

[d]7K/8/k1P5/7p/8/8/8/8 w - - 0 1

White to move and draw in what looks to be a hopeless position. White has two goals, promote his C pawn and stop black's h-pawn. Seems he can't do either. But it turns out he can try to do both, which ties black's hands and leads to the draw...

I've always liked this study by Richard Reti. It was taken from a Master game where White confidently resigned in the above position!

The Rocket Propelled King.

The point is White can travel down and across the board simultaneously via H8-G7, F6 & E5! White will either support the White pawn or capture Black's pawn from F4!

[bob]

A beautiful position that illustrates the advantage that a single tempo can give. Then zugzwang and black is lost. The key to this position is looking at it yourself, before using an engine. It's very instructive! Some very strong engine(s) also struggle here. Komodo CCT after 5 min cannot see the win on my machine.



[d]4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1

Humans cannot calculate all possible lines so how looking at it by myself can help?

seeing the solution does not help to be able to practically win it because black can practically play a different move.

For example 1.Ke2 Ke7 or 1.Ke2 a5 or 1.Ke2 Kd7 2.Kf3 Kc6

Impossible to calculate all lines and if humans can understand that white wins then I would like to read some strategy that tells me what to do in every position and not a variation.

Hi Uri, I did not say calculate it youself. I said look at the position yourself without an engine. You of all people I thought would understand this. LOL, I guess not!. I studied and learned the secrets of this postion without an engine. I wanted people to move the pieces and try to understand this position. I guess this was the wrong place to post this.

There are things to be learned here. For example, Botvinnik used the term "trousers" (two legs) when discussing two passed pawns with at least one file in between them. A common position happens with the white a and c pawns on the same rank somewhere with the black king two ranks in front. If the pawns are on a4/c4, and king at b6, if black plays Kb5 threatening the c4 pawn, white calmly plays a5 and black must retreat to prevent that pawn from queening. Repeat until black can't give way any more. If there is a tempo problem (there are LOTS of tempo problems in the full game) white has the b pawn that can advance to "lose" a tempo and avoid zugzwang. Of course, on the other side of the board, the SAME game goes on in reverse. But white has that "move in his pocket" since he plays first, and he wins each and every zugzwang battle that occurs, unless he loses that tempi somehow.

I found it quite educational when we were fiddling with this back in the late 90's on ICC...

There are SO many positions where black will say "If I just had one extra move, or if I could just lose one tempi..." Strangely, it always seemed (to me) to be easier for white to lose than for black, given that mistakes are made, because white seems to have some sort of "first-move advantage" that he struggles to not give away, making it easier to do so.

Here's a sort of similar "two simultaneous games on one board" position from Reti:

[d]7K/8/k1P5/7p/8/8/8/8 w - - 0 1

White to move and draw in what looks to be a hopeless position. White has two goals, promote his C pawn and stop black's h-pawn. Seems he can't do either. But it turns out he can try to do both, which ties black's hands and leads to the draw...

I've always liked this study by Richard Reti. It was taken from a Master game where White confidently resigned in the above position!

The Rocket Propelled King.

The point is White can travel down and across the board simultaneously via H8-G7, F6 & E5! White will either support the White pawn or capture Black's pawn from F4!

I first saw this in an old Chess Life and Review back in the early blitz/Cray Blitz days. I think it was in Larry Evan's monthly column. When I saw "white to move and draw" I thought it was a mis-print. As did Bert Gower. Then we looked at Evan's explanation and thought "wow, don't judge a book by the cover..."

[bob]

A beautiful position that illustrates the advantage that a single tempo can give. Then zugzwang and black is lost. The key to this position is looking at it yourself, before using an engine. It's very instructive! Some very strong engine(s) also struggle here. Komodo CCT after 5 min cannot see the win on my machine.



[d]4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1

Humans cannot calculate all possible lines so how looking at it by myself can help?

seeing the solution does not help to be able to practically win it because black can practically play a different move.

For example 1.Ke2 Ke7 or 1.Ke2 a5 or 1.Ke2 Kd7 2.Kf3 Kc6

Impossible to calculate all lines and if humans can understand that white wins then I would like to read some strategy that tells me what to do in every position and not a variation.

Hi Uri, I did not say calculate it youself. I said look at the position yourself without an engine. You of all people I thought would understand this. LOL, I guess not!. I studied and learned the secrets of this postion without an engine. I wanted people to move the pieces and try to understand this position. I guess this was the wrong place to post this.

Since i can see by myself why 18...h2 was forced, and that it loses, so all i need now is to try to see if there is any other improvement before that.
Obviously you have already done all that, and found it is a forced win in every variation, and therefore it looks like a wonderful bit of endgame technique to be familiar with.

[Oh! and I am refering to the 32 move variation by Critter which someone put up on the first page here.]

The paper linked to gives a dozen + key positions that make this position work. It does point out there some very hard wins in a few lines (both sides queen). What helped me the most was to recognize those positions the paper calls "maintainable" (I think that was his term). IE a position where the king can't force the pawns into a losing position directly, requiring a voluntary pawn move by the opponent to let the king in. When I first looked at it, I assumed all the pawns on one side would advance together since that covers more squares and restricts the king. Completely wrong answer.

[reflectionofpower]

A beautiful position that illustrates the advantage that a single tempo can give. Then zugzwang and black is lost. The key to this position is looking at it yourself, before using an engine. It's very instructive! Some very strong engine(s) also struggle here. Komodo CCT after 5 min cannot see the win on my machine.



[d]4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1

Stockfish 220512 finds rather it quickly but Deep Rybka 4.1 even faster BUT SPark 1.0 finds it almost instantaneously.

[ernest]

BUT SPark 1.0 finds it almost instantaneously.

Are you sure?

New game
4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1

Analysis by spark-1.0:

1.a4 Kd7 2.a5 h5 3.Ke2 h4
= (0.23) Depth: 6/5 00:00:00 1kN
1.a4 Kd7
+/= (0.51 !) Depth: 7/6 00:00:00 3kN
1.a4 Kd7 2.Ke2 Kc6 3.Kd3 h5 4.a5
+/= (0.51) Depth: 7/6 00:00:00 4kN
1.a4 Kd7 2.Ke2 Kc6 3.Kd3 h5 4.a5
= (0.25 --) Depth: 8/8 00:00:00 5kN
1.a4 Kd7 2.Ke2 Kc6 3.Kf3 h5 4.a5 h4
= (0.23) Depth: 8/8 00:00:00 10kN
1.a4 h5
+/= (0.50 !) Depth: 9/9 00:00:00 13kN
1.a4 Kd7 2.Ke2 Kc6 3.Kd3 h5 4.Ke4 h4 5.a5
+/= (0.28) Depth: 9/9 00:00:00 15kN
1.a4 Kd7 2.Ke2 Kc6 3.Kd3 h5 4.Ke4 h4 5.a5
= (0.02 --) Depth: 10/9 00:00:00 23kN
1.a4 Kd7 2.Ke2 Kc6 3.Kf3 h5 4.Kg3 Kd5 5.a5 Kc5
= (0.24) Depth: 10/10 00:00:00 38kN
1.a4 Kd7 2.Ke2 Kc6 3.Kf3 h5 4.Kg3 Kb6 5.Kh4 Ka5 6.Kxh5 Kxa4
= (0.07) Depth: 11/12 00:00:00 52kN
1.a4 Kd7 2.Ke2 Kc6 3.Kf3 h5 4.Kg3 Kb6 5.Kh4 Ka5 6.Kxh5 Kxa4
= (0.07) Depth: 12/13 00:00:00 95kN
1.a4 Kd7 2.Ke2 Kc6 3.Kf3 h5 4.Kg3 Kb6 5.Kh4 Ka5 6.Kxh5 Kxa4 7.Kg5
+/= (0.26) Depth: 13/14 00:00:00 166kN
1.a4 Kd7 2.Ke2 Kc6 3.Kf3 h5 4.Kg3 Kb6 5.Kh4 Ka5 6.Kxh5 Kxa4 7.Kg5
= (0.01 --) Depth: 14/16 00:00:00 286kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 h5 4.a4 Kb6 5.Kg5 Ka5 6.Kxh5 Kxa4 7.Kg5 Kb4
= (0.07) Depth: 14/18 00:00:00 490kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kf5 h5 6.a4 Kb4 7.Kg5 Kxa4 8.Kxh5
= (-0.07) Depth: 15/20 00:00:00 844kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 16/20 00:00:00 1551kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 17/21 00:00:01 2553kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 18/22 00:00:01 4249kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 19/24 00:00:02 6827kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 20/25 00:00:04 10991kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 21/29 00:00:06 17918kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 22/31 00:00:10 28228kN
1.Ke2 Kd7 2.Kf3 Kc6 3.Kf4 Kc5 4.a3 h6 5.Kg4 Kc4 6.Kh4 Kb5 7.Kg4 Kc4
= (0.00) Depth: 23/38 00:00:30 84726kN
1.c4 h5
= (0.25 !) Depth: 23/38 00:00:35 101mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc7 5.Kf3 Kb7 6.c5 h3 7.Kg3 h2 8.Kxh2 Ka7 9.b4 Ka6 10.c6 Ka7 11.b5 Kb8 12.Kg3
+/= (0.26) Depth: 23/40 00:00:39 112mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc7 5.Kf3 Kb7 6.c5 h3 7.Kg3 h2 8.Kxh2 Ka7 9.b4 Ka6 10.Kg2 Kb5 11.Kg3 Ka6 12.c6 Ka7 13.b5
+/= (0.42) Depth: 24/40 00:00:43 128mN
1.c4 h5
+/= (0.67 !) Depth: 25/42 00:00:53 158mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc7 5.Kf3 Kb7 6.c5 f5 7.Kg2 f4 8.b4 g5 9.b5 Kb8 10.Kh2 f3 11.Kg1 h3 12.c6 Kc7 13.Kf2 h2
+/- (0.75) Depth: 25/42 00:00:57 175mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc7 5.c5 Kb8 6.Kf3 f5 7.Kg2 f4 8.b4 g6 9.Kh3 f3 10.Kh2 g5 11.Kg1 g4 12.Kf2 h3 13.b5 Kc7 14.a6
+/- (0.75) Depth: 26/42 00:01:08 208mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc7 5.c5 Kb8 6.Kf3 f5 7.Kg2 f4 8.b4 g6 9.Kh3 f3 10.Kh2 g5 11.Kg1 g4 12.Kf2 h3 13.b5 Kc7 14.a6
+/= (0.50 --) Depth: 27/42 00:01:24 255mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc6 5.Kf3 f5 6.b4 g5 7.Kf2 Kb7 8.Kg2 g4 9.c5 f4 10.Kg1 Kb8 11.b5 f3 12.Kf2 Kb7 13.b6 Kc6 14.a6
+/= (0.36) Depth: 27/46 00:02:18 412mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc6 5.Kf3 f5 6.b4 g5 7.Kf2 Kb7 8.Kg2 g4 9.c5 f4 10.Kg1 Kb8 11.b5 f3 12.Kf2 Kb7 13.b6 Kc6 14.a6
= (0.11 --) Depth: 28/48 00:03:21 588mN
1.c4 h5 2.a4 Kd7 3.a5 h4 4.Ke2 Kc6 5.Kf3 f5 6.Kf4 Kc5 7.Kf3 Kc6
= (0.00) Depth: 28/49 00:06:47 1092mN

[ernest]

...and later:

Analysis by spark-1.0:
...
1.Ke2 Kd7
+/= (0.61 !) Depth: 28/52 00:16:35 2473mN
1.Ke2 Kd7 2.a4 Kc6 3.c4 Kb7 4.Kf1 h5 5.Kg1 Kb6 6.b4 Ka7 7.a5 h4 8.c5 Kb8 9.Kg2 g5 10.Kh3 f6 11.Kg2 f5 12.Kh2 Kc7 13.Kg1 Kd7 14.b5 Kc7 15.Kg2
+/= (0.61) Depth: 28/52 00:16:49 2519mN
1.Ke2 Kd7 2.a4 Kc6 3.c4 Kb7 4.Kf1 h5 5.Kg1 Kb6 6.b4 Ka7 7.a5 h4 8.c5 Kb8 9.Kg2 g5 10.Kh3 f6 11.Kg2 f5 12.Kh2 Kc7 13.Kg1 Kd7 14.b5 Kc7 15.Kg2
+/= (0.61) Depth: 29/52 00:17:44 2665mN
1.Ke2 Kd7 2.a4 Kc6 3.Kf3 Kc5 4.a5 Kb5 5.b4 h5 6.Kf4 Ka6 7.Kg5 g6 8.Kh4 Kb5 9.c3 f6 10.c4+ Ka6 11.Kg3 f5 12.Kg2 g5 13.c5 Kb5 14.Kf1 f4 15.Kf2 Ka6 16.Kf3 Kb5
+/= (0.61) Depth: 30/52 00:22:28 3375mN
1.Ke2 Kd7 2.a4 Kc6 3.Kf3 Kc5 4.b3 Kb4 5.Kf4 h5 6.c3+ Ka5 7.c4 Kb4 8.Kg5 g6 9.Kh4 f6 10.Kh3 f5 11.Kg3 g5 12.Kg2 f4 13.Kf3 h4 14.Kg4 Kc5 15.a5 Kc6 16.b4 Kd6
+/= (0.42) Depth: 31/53 00:33:44 5034mN

[lucasart]

A beautiful position that illustrates the advantage that a single tempo can give. Then zugzwang and black is lost. The key to this position is looking at it yourself, before using an engine. It's very instructive! Some very strong engine(s) also struggle here. Komodo CCT after 5 min cannot see the win on my machine.

[d]4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1

This is too hard for DiscoCheck

Code: Select all

info score cp 18 depth 26 nodes 215116805 time 80036 pv a2a4 e8d7 c2c4 h7h5 d1e2 h5h4 a4a5 d7c7 c4c5 f7f5 e2f1 c7b7 f1g2 f5f4 b2b4 g7g6 b4b5 b7b8 a5a6 b8a7 g2h3 f4f3 h3h2 g6g5 h2h3 g5g4 h3g4

Intuitively I would play Ke2 here, rather than an immediate a4. I can't explain why, just intuition. And if it happens to be the correct move, it's only by chance. I would most likely blunder later.

[supersteve3d]

At one point, I thought KQ vs KR was hard. It is trivial, once you recognize the critical positions. Ditto for KBN vs K. All it takes is one wrong move to turn it into a 50-move draw. But a little study and that doesn't happen.

Wild 7 is incredibly clever. And incredibly hard the first time you play it. Steve Lim and I used to play it all the time (I was actually trying to add rules to Crafty to help solve it back then). We became quite adept at never losing with white so long as time wasn't a factor. And ditto for squeaking out draws as black (or even wins) if white makes one mistake.

Once you figure out how simple it actually is, it is one of those "THUNK... I coulda had a V-8" moments.

Those were the days Bob! You have a great memory for these things =)
Computer chess has come a long way.. Hope you are doing well..

6 core Syzygy Stockfish.. is able to see both the Ke2 and Ke1 wins from root.. amazing.

Code: Select all

FEN: 4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1 

Stockfish_syzygy_14041800_x64_modern_sse42:
  1/1	00:00	          13	6,500	+0.48	a4
  2/2	00:00	          56	28,000	+0.04	a4 h5
  3/3	00:00	         121	60,500	+0.58	a4 h5 a5
  4/4	00:00	         271	135,500	+0.04	a4 h5 a5 h4
  5/5	00:00	         518	259,000	+0.68	a4 h5 a5 h4 a6
  6/6	00:00	       1,442	721,000	+0.04	a4 h5 a5 h4 a6 h3
  7/7	00:00	       3,497	1,165,666	+1.53	a4 h5 a5 h4 a6 h3 a7
  8/8	00:00	       8,644	2,161,000	+0.32	a4 Kd7 a5 Kc7 Ke2 h5 b4 h4
  9/11	00:00	      16,422	2,737,000	+0.18	a4 Kd7 Ke2 h5 Kf3 Kc7 c4 g5 a5 h4
 10/15	00:00	      35,316	3,531,600	+0.22	a4 Kd7 Ke2 h5 Kf3 Kc6 c4 h4 b4 f5 a5 g5 b5+ Kb7 c5 g4+ Kf4
 11/15	00:00	      45,170	3,764,166	+0.22	a4 Kd7 Ke2 h5 Kf3 Kc6 c4 h4 b4 f5 a5 g5 b5+ Kb7 c5 g4+ Kf4
 12/15	00:00	      50,726	3,902,000	+0.22	a4 Kd7 Ke2 h5 Kf3 Kc6 c4 h4 b4 f5 a5 g5 b5+ Kb7 c5 g4+ Kf4
 13/18	00:00	     117,535	4,701,400	+0.16	Ke2 h5 Kf3 Kd7 a4 Kc6 Kf4 f6 b4 g6 c4 g5+ Kf5 h4 Kxf6
 14/18	00:00	     213,645	5,341,125	+0.04	Ke2 h5 Kf3 Kd7 a4 Kc6 c4 f5 b4 h4 a5 g5 b5+ Kc5 b6 g4+ Kf4 g3
 15/18	00:00	     260,430	5,661,521	+0.04	Ke2 h5 Kf3 Kd7 a4 Kc6 c4 f5 b4 h4 a5 g5 b5+ Kc5 b6 g4+ Kf4 g3 Kf3
 16/20	00:00	     625,916	7,727,358	+0.06	c4 h5 a4 h4 Ke2 Kd7 a5 f5 a6 Kc7 c5 h3 Kf3 Kc6 a7 Kb7 c6+ Kxa7
 17/21	00:00	   1,048,372	8,320,412	+0.24	c4 Kd7 Ke2 h5 a4 g5 a5 h4 a6 Kc7 c5 g4 b4 Kb8 b5 Ka7 Kf2 f5 Kg2 f4 c6 h3+ Kh2 Kb6
 18/21	00:00	   1,263,955	8,482,919	+0.19	c4 h5 Ke2 g5 a4 Kd7 a5 g4 b4 h4 a6 Kc7 b5 Kb6 c5+ Ka7 Ke3 f5 c6 Kb6 a7 Kxa7 c7
 19/22	00:00	   1,509,636	8,880,211	+0.24	c4 h5 Ke2 Kd7 a4 g5 a5 g4 b4 h4 b5 Kc7 c5 Kb8 Kf2 f5 a6 Ka7 Kg2 f4 c6 Kb6
 20/22	00:00	   1,956,307	9,405,322	+0.17	c4 h5 Ke2 Kd7 a4 g5 a5 h4 b4 g4 b5 Kc7 c5 Kb8 Kf2 f5 a6 Ka7 Kg2 f4 c6 Kb6
 21/25	00:00	   2,649,010	10,110,725	+0.10	c4 h5 Ke2 Kd7 a4 g5 a5 h4 b4 g4 b5 Kc7 c5 Kb8 Ke3 h3 Kf2 f5 Kg3 f4+ Kh2 Kb7 a6+ Kb8
 22/31	00:00	   6,640,581	11,528,786	+0.33	c4 h5 Ke2 f5 a4 Kd7 a5 h4 Kf2 Kc7 c5 g5 a6 h3 Kg3 Kb8 c6 g4 b4 f4+ Kh2 f3 Kg3 h2 Kxh2 Ka7 c7
 23/32	00:00	   9,029,232	12,136,064	+0.28	c4 h5 Ke2 f5 a4 Kd7 a5 Kc7 Kf3 h4 Kg2 f4 c5 g5 a6 g4 b4 h3+ Kh2 Kb8 c6 f3 Kg3 h2 Kxh2 Kc7 a7 f2 a8Q f1Q Qb7+
 24/36	00:01	  20,351,667	14,271,856	 0.00	a4 Kd7 a5 Kc6 b4 Kb5 Ke2 g5 Kf3 h5 Kg2 h4 Kh3 Ka6 Kg4 Kb5 Kh3
 25/36	00:01	  22,318,728	14,010,500	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 26/36	00:01	  26,414,303	14,117,746	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 27/36	00:02	  28,585,611	14,165,317	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 28/36	00:02	  34,078,405	14,234,922	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 29/36	00:02	  39,935,606	14,161,562	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 30/36	00:03	  47,611,025	14,077,772	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 31/36	00:04	  55,603,369	13,904,318	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 32/38	00:05	  69,906,014	13,867,489	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 33/43	00:07	  96,835,192	14,058,535	 0.00	a4 Kd7 a5 Kc6 c4 h5 Ke2 h4 Kf3 f5 Kf4 g5+ Kf3 g4+ Kf2 h3 Kg3 f4+ Kh2 Kc5 b4+ Kd4 a6 f3 a7 f2 a8Q f1Q Qa7+ Kc3 Qg7+ Kxb4 Qxg4 Qxc4 Qxc4+ Kxc4
 34/43	00:09	 127,875,485	14,058,430	 0.00	a4 Kd7 a5 Kc6 c4 h5 Ke2 h4 Kf3 f5 Kf4 g5+ Kf3 g4+ Kf2 h3 Kg3 f4+ Kh2 Kc5 b4+ Kd4 a6 f3 a7 f2 a8Q f1Q Qa7+ Kc3 Qg7+ Kxb4 Qxg4 Qxc4 Qxc4+ Kxc4
 35/43	00:11	 155,073,027	13,843,333	 0.00	a4 Kd7 a5 Kc6 c4 h5 Ke2 h4 Kf3 f5 Kf4 g5+ Kf3 g4+ Kf2 h3 Kg3 f4+ Kh2 Kc5 b4+ Kd4 a6 f3 a7 f2 a8Q f1Q Qa7+ Kc3 Qg7+ Kxb4 Qxg4 Qxc4 Qxc4+ Kxc4
 36/43+	00:15	 217,248,035	13,935,982	+0.06	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 c5 h4+ Kh3 f4 Kg4 Kc6 a6 Kc7 b4 Kc6 b5+ Kxc5 a7
 36/43+	00:17	 237,580,511	14,070,507	+0.12	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 c5 h4+ Kh3 f4 Kg4 Kc6 a6 Kc7 b4 Kc6 b5+ Kxc5 a7
 36/43+	00:18	 254,826,830	14,113,920	+0.21	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 f4+ Kg2 g4 c5 h4 Kg1 h3 Kh2 Kc7 a6 f3 Kg3 Kc6 b5+ Kxb5 a7 h2 Kxh2 f2 Kg2
 36/43+	00:19	 275,751,647	14,189,865	+0.35	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 f4+ Kg2 g4 c5 h4 Kg1 h3 Kh2 f3 Kg3 f2 Kxf2 Kc6 a6 h2 Kg2
 36/43+	00:21	 304,928,081	14,207,150	+0.56	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 Kg2 Kb7 Kf3 h4 Kg2 f4 c5 g4 Kg1 h3 Kh2 Kc7 a6 f3 Kg3 Kc6 b5+ Kxb5 a7 h2 Kxh2 f2 Kg2
 36/43+	00:23	 331,031,928	14,282,161	+0.87	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 Kg2 Kb7 Kf3 h4 Kg2 f4 c5 g4 Kg1 h3 Kh2 Kc7 a6 f3 Kg3 Kc6 b5+ Kxb5 a7 h2 Kxh2 f2 Kg2
 36/57+	00:26	 367,837,941	14,197,851	+1.34	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 Kg2 Kb7 c5 h4 Kg1 Ka6 c6 g4 b5+ Kxb5 c7
 36/57+	00:28	 402,240,546	14,134,533	+2.05	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 c5 Kb5 Kg2 g4 Kg3 Ka6 c6 Ka7 b5 Kb8 a6 Kc7 a7 h4+ Kxh4
 36/57	00:33	 456,559,291	13,633,519	+1.77	a4 f5 Ke2 h5 Kf3 h4 b4 Kd8 b5 Kc7 a5 Kb8 b6 Kb7 c4 Kc6 c5 Kb7 Kf4 g5+ Ke5 h3 Kd6 h2 c6+ Ka6 c7 h1Q c8Q+ Kxa5 b7 Qh2+ Ke6 Qh6+ Kxf5 Qh7+ Kf6 Qh6+ Ke5 Qh2+ Ke6 Qh6+ Kd5 Qh1+ Kd6 Qh2+ Kc6 Qc2+
 37/57+	00:41	 551,321,130	13,237,637	+1.84	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 b5+ Kc7 Kh3 f5 c5 Kb8 c6 Kc7 Kh2 g4 Kg2 f4 Kg1 f3 Kf2 h3 Kg3 Kd6 a6 f2 Kxf2 h2 Kg2 g3 a7
 37/57+	00:43	 569,165,249	13,210,901	+1.90	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 c5 Kb7 b5 f5 b6 f4 Kg2 g4 Kg1 f3 Kf2 h3 Kg3 Kc6 a6 Kxc5 a7 h2 Kxh2 f2 Kg2
 37/57+	00:44	 586,230,612	13,158,936	+1.99	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 b5 Kd6 a6 Kc7 c5 Kb8 c6 Ka7 c7
 37/57+	00:45	 601,666,629	13,116,492	+2.13	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 b5 Kd6 a6 Kc7 c5 f5 b6+ Kc6 a7 Kb7 c6+ Ka8 c7 g4+ Kh2
 37/57+	00:47	 618,204,615	13,083,418	+2.34	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 b5 Kd6 a6 Kc5 a7
 37/57+	00:49	 638,050,961	13,035,547	+2.65	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kb8 b5 Ka7 Kg2 g4 Kg1 f5 Kg2 f4 Kg1 g3 Kg2 Kb8 b6 Kc8 c6 h3+ Kxh3 Kb8 a7+ Ka8 c7
 37/57+	00:50	 660,090,316	13,035,216	+3.12	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kc8 c6 Kc7 a7 g4+ Kxg4
 37/57+	00:52	 682,999,905	13,029,873	+3.82	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kc6 b5+ Kd5 a7
 37/57+	00:57	 746,826,729	13,090,051	+6.45	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kc6 b5+ Kd5 a7
 37/57+	01:08	 908,977,173	13,261,221	+8.81	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 Ka7 b5 g5 c4 f5 c5 Kb7 a6+ Ka7 Kg3 g4 Kf4 h6 Kg3 h5 Kh2 Ka8 b6 Kb8 Kg2 Kc8 c6 f4 a7
 37/57	01:14	 989,392,778	13,389,714	+8.16	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 g6 Kf4 h4 Kg4 g5 Kxg5 h3
 38/57+	01:18	1,044,468,474	13,342,724	+8.22	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 f5 c5 g5 c6 h4 b5+ Kxb5 c7 h3 c8Q h2 Qxf5+ Ka6 Qg6+ Kb7 a6+ Kb8 Qg8+ Ka7 Qg7+ Kxa6 Qf6+
 38/57+	01:23	1,072,884,153	13,329,243	+8.29	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 f5 c5 Kb7 Kg3 Ka6 c6 Ka7 b5 g5 b6+ Ka6 c7 Kb7 a6+ Kxb6 c8Q h4+ Kh2 f4 a7
 38/57+	01:23	1,096,820,761	13,321,116	+8.38	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 g6 Kg2 g5 Kg3 h4+ Kh3 f5 c5 Kb5 Kh2 g4 Kg2 f4 Kg1 h3 Kh2 f3 Kg3 f2 Kxf2 h2 Kg2 g3 Kh1 Kc6 a6 Kc7 Kg2 Kc6 b5+ Kc7 b6+ Kc6 a7 Kb7 c6+ Kxb6 a8Q
 38/57+	01:29	1,189,408,240	13,366,089	+9.04	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 g6 Kg2 g5 Kg3 h4+ Kh3 f5 c5 Kb5 Kh2 g4 Kg2 f4 Kg1 h3 Kh2 f3 Kg3 f2 Kxf2 h2 Kg2 g3 Kh1 Kc6 a6 Kc7 Kg2 Kc6 b5+ Kc7 b6+ Kc6 a7 Kb7 c6+ Kxb6 a8Q
 38/57+	01:37	1,319,410,797	13,500,709	+9.51	Ke2 Kd7 a4 Kc6 c4 Kb7 Kf3 h5 Kg3 f5 a5 Ka6 b4 g6 Kg2 g5 Kg3 f4+ Kf2 h4 c5 h3 c6 Ka7 b5 h2 Kg2 h1N Kxh1 f3 b6+ Ka6 c7 Kb7 a6+ Kxb6 c8Q f2 Qd8+ Kc6 Qf6+
 38/57+	01:41	1,387,475,216	13,643,897	+10.21	Ke2 Kd7 a4 Kc6 c4 Kb7 Kf3 h5 Kg3 f5 a5 Ka6 b4 g6 c5 Kb5 Kf3 Kxb4 a6 g5 a7 g4+ Kg3 Kb5 a8Q Kc4 c6 h4+ Kxh4 Kd4 c7
 38/57+	01:47	1,490,733,412	13,873,611	+11.26	Ke2 Kd7 a4 Kc6 c4 Kb7 Kf3 h5 Kg3 f5 a5 Ka6 b4 g6 Kg2 g5 Kg3 f4+ Kf2 h4 c5 h3 c6 Ka7 b5 h2 Kg2 h1N Kxh1 f3 b6+ Ka6 c7 Kb7 a6+

[Mathboy]

I too used to play this on icc and think I once could always win with white. And pounce on the inevitable mistake as black. I doubt I can now. But I've tried to play it on icc in the past few months. I can have the w7 seek out for hours with no takers. We must start the w7 come back! Some bughouse would be good too.

[bob]

At one point, I thought KQ vs KR was hard. It is trivial, once you recognize the critical positions. Ditto for KBN vs K. All it takes is one wrong move to turn it into a 50-move draw. But a little study and that doesn't happen.

Wild 7 is incredibly clever. And incredibly hard the first time you play it. Steve Lim and I used to play it all the time (I was actually trying to add rules to Crafty to help solve it back then). We became quite adept at never losing with white so long as time wasn't a factor. And ditto for squeaking out draws as black (or even wins) if white makes one mistake.

Once you figure out how simple it actually is, it is one of those "THUNK... I coulda had a V-8" moments.

Those were the days Bob! You have a great memory for these things =)
Computer chess has come a long way.. Hope you are doing well..

6 core Syzygy Stockfish.. is able to see both the Ke2 and Ke1 wins from root.. amazing.

Code: Select all

FEN: 4k3/5ppp/8/8/8/8/PPP5/3K4 w - - 0 1 

Stockfish_syzygy_14041800_x64_modern_sse42:
  1/1	00:00	          13	6,500	+0.48	a4
  2/2	00:00	          56	28,000	+0.04	a4 h5
  3/3	00:00	         121	60,500	+0.58	a4 h5 a5
  4/4	00:00	         271	135,500	+0.04	a4 h5 a5 h4
  5/5	00:00	         518	259,000	+0.68	a4 h5 a5 h4 a6
  6/6	00:00	       1,442	721,000	+0.04	a4 h5 a5 h4 a6 h3
  7/7	00:00	       3,497	1,165,666	+1.53	a4 h5 a5 h4 a6 h3 a7
  8/8	00:00	       8,644	2,161,000	+0.32	a4 Kd7 a5 Kc7 Ke2 h5 b4 h4
  9/11	00:00	      16,422	2,737,000	+0.18	a4 Kd7 Ke2 h5 Kf3 Kc7 c4 g5 a5 h4
 10/15	00:00	      35,316	3,531,600	+0.22	a4 Kd7 Ke2 h5 Kf3 Kc6 c4 h4 b4 f5 a5 g5 b5+ Kb7 c5 g4+ Kf4
 11/15	00:00	      45,170	3,764,166	+0.22	a4 Kd7 Ke2 h5 Kf3 Kc6 c4 h4 b4 f5 a5 g5 b5+ Kb7 c5 g4+ Kf4
 12/15	00:00	      50,726	3,902,000	+0.22	a4 Kd7 Ke2 h5 Kf3 Kc6 c4 h4 b4 f5 a5 g5 b5+ Kb7 c5 g4+ Kf4
 13/18	00:00	     117,535	4,701,400	+0.16	Ke2 h5 Kf3 Kd7 a4 Kc6 Kf4 f6 b4 g6 c4 g5+ Kf5 h4 Kxf6
 14/18	00:00	     213,645	5,341,125	+0.04	Ke2 h5 Kf3 Kd7 a4 Kc6 c4 f5 b4 h4 a5 g5 b5+ Kc5 b6 g4+ Kf4 g3
 15/18	00:00	     260,430	5,661,521	+0.04	Ke2 h5 Kf3 Kd7 a4 Kc6 c4 f5 b4 h4 a5 g5 b5+ Kc5 b6 g4+ Kf4 g3 Kf3
 16/20	00:00	     625,916	7,727,358	+0.06	c4 h5 a4 h4 Ke2 Kd7 a5 f5 a6 Kc7 c5 h3 Kf3 Kc6 a7 Kb7 c6+ Kxa7
 17/21	00:00	   1,048,372	8,320,412	+0.24	c4 Kd7 Ke2 h5 a4 g5 a5 h4 a6 Kc7 c5 g4 b4 Kb8 b5 Ka7 Kf2 f5 Kg2 f4 c6 h3+ Kh2 Kb6
 18/21	00:00	   1,263,955	8,482,919	+0.19	c4 h5 Ke2 g5 a4 Kd7 a5 g4 b4 h4 a6 Kc7 b5 Kb6 c5+ Ka7 Ke3 f5 c6 Kb6 a7 Kxa7 c7
 19/22	00:00	   1,509,636	8,880,211	+0.24	c4 h5 Ke2 Kd7 a4 g5 a5 g4 b4 h4 b5 Kc7 c5 Kb8 Kf2 f5 a6 Ka7 Kg2 f4 c6 Kb6
 20/22	00:00	   1,956,307	9,405,322	+0.17	c4 h5 Ke2 Kd7 a4 g5 a5 h4 b4 g4 b5 Kc7 c5 Kb8 Kf2 f5 a6 Ka7 Kg2 f4 c6 Kb6
 21/25	00:00	   2,649,010	10,110,725	+0.10	c4 h5 Ke2 Kd7 a4 g5 a5 h4 b4 g4 b5 Kc7 c5 Kb8 Ke3 h3 Kf2 f5 Kg3 f4+ Kh2 Kb7 a6+ Kb8
 22/31	00:00	   6,640,581	11,528,786	+0.33	c4 h5 Ke2 f5 a4 Kd7 a5 h4 Kf2 Kc7 c5 g5 a6 h3 Kg3 Kb8 c6 g4 b4 f4+ Kh2 f3 Kg3 h2 Kxh2 Ka7 c7
 23/32	00:00	   9,029,232	12,136,064	+0.28	c4 h5 Ke2 f5 a4 Kd7 a5 Kc7 Kf3 h4 Kg2 f4 c5 g5 a6 g4 b4 h3+ Kh2 Kb8 c6 f3 Kg3 h2 Kxh2 Kc7 a7 f2 a8Q f1Q Qb7+
 24/36	00:01	  20,351,667	14,271,856	 0.00	a4 Kd7 a5 Kc6 b4 Kb5 Ke2 g5 Kf3 h5 Kg2 h4 Kh3 Ka6 Kg4 Kb5 Kh3
 25/36	00:01	  22,318,728	14,010,500	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 26/36	00:01	  26,414,303	14,117,746	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 27/36	00:02	  28,585,611	14,165,317	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 28/36	00:02	  34,078,405	14,234,922	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 29/36	00:02	  39,935,606	14,161,562	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 30/36	00:03	  47,611,025	14,077,772	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 31/36	00:04	  55,603,369	13,904,318	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 32/38	00:05	  69,906,014	13,867,489	 0.00	a4 Kd7 a5 Kc6 Ke1 Kb5 b4 h5 Kf2 h4 Kg2 g5 Kh3 Ka6 Kg4 Kb5 Kh3
 33/43	00:07	  96,835,192	14,058,535	 0.00	a4 Kd7 a5 Kc6 c4 h5 Ke2 h4 Kf3 f5 Kf4 g5+ Kf3 g4+ Kf2 h3 Kg3 f4+ Kh2 Kc5 b4+ Kd4 a6 f3 a7 f2 a8Q f1Q Qa7+ Kc3 Qg7+ Kxb4 Qxg4 Qxc4 Qxc4+ Kxc4
 34/43	00:09	 127,875,485	14,058,430	 0.00	a4 Kd7 a5 Kc6 c4 h5 Ke2 h4 Kf3 f5 Kf4 g5+ Kf3 g4+ Kf2 h3 Kg3 f4+ Kh2 Kc5 b4+ Kd4 a6 f3 a7 f2 a8Q f1Q Qa7+ Kc3 Qg7+ Kxb4 Qxg4 Qxc4 Qxc4+ Kxc4
 35/43	00:11	 155,073,027	13,843,333	 0.00	a4 Kd7 a5 Kc6 c4 h5 Ke2 h4 Kf3 f5 Kf4 g5+ Kf3 g4+ Kf2 h3 Kg3 f4+ Kh2 Kc5 b4+ Kd4 a6 f3 a7 f2 a8Q f1Q Qa7+ Kc3 Qg7+ Kxb4 Qxg4 Qxc4 Qxc4+ Kxc4
 36/43+	00:15	 217,248,035	13,935,982	+0.06	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 c5 h4+ Kh3 f4 Kg4 Kc6 a6 Kc7 b4 Kc6 b5+ Kxc5 a7
 36/43+	00:17	 237,580,511	14,070,507	+0.12	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 c5 h4+ Kh3 f4 Kg4 Kc6 a6 Kc7 b4 Kc6 b5+ Kxc5 a7
 36/43+	00:18	 254,826,830	14,113,920	+0.21	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 f4+ Kg2 g4 c5 h4 Kg1 h3 Kh2 Kc7 a6 f3 Kg3 Kc6 b5+ Kxb5 a7 h2 Kxh2 f2 Kg2
 36/43+	00:19	 275,751,647	14,189,865	+0.35	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 f4+ Kg2 g4 c5 h4 Kg1 h3 Kh2 f3 Kg3 f2 Kxf2 Kc6 a6 h2 Kg2
 36/43+	00:21	 304,928,081	14,207,150	+0.56	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 Kg2 Kb7 Kf3 h4 Kg2 f4 c5 g4 Kg1 h3 Kh2 Kc7 a6 f3 Kg3 Kc6 b5+ Kxb5 a7 h2 Kxh2 f2 Kg2
 36/43+	00:23	 331,031,928	14,282,161	+0.87	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 Kg2 Kb7 Kf3 h4 Kg2 f4 c5 g4 Kg1 h3 Kh2 Kc7 a6 f3 Kg3 Kc6 b5+ Kxb5 a7 h2 Kxh2 f2 Kg2
 36/57+	00:26	 367,837,941	14,197,851	+1.34	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 Kg2 Kb7 c5 h4 Kg1 Ka6 c6 g4 b5+ Kxb5 c7
 36/57+	00:28	 402,240,546	14,134,533	+2.05	a4 Kd7 Ke2 Kc6 Kf3 h5 c4 Kb7 a5 f5 Kg3 g5 b4 Ka6 c5 Kb5 Kg2 g4 Kg3 Ka6 c6 Ka7 b5 Kb8 a6 Kc7 a7 h4+ Kxh4
 36/57	00:33	 456,559,291	13,633,519	+1.77	a4 f5 Ke2 h5 Kf3 h4 b4 Kd8 b5 Kc7 a5 Kb8 b6 Kb7 c4 Kc6 c5 Kb7 Kf4 g5+ Ke5 h3 Kd6 h2 c6+ Ka6 c7 h1Q c8Q+ Kxa5 b7 Qh2+ Ke6 Qh6+ Kxf5 Qh7+ Kf6 Qh6+ Ke5 Qh2+ Ke6 Qh6+ Kd5 Qh1+ Kd6 Qh2+ Kc6 Qc2+
 37/57+	00:41	 551,321,130	13,237,637	+1.84	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 b5+ Kc7 Kh3 f5 c5 Kb8 c6 Kc7 Kh2 g4 Kg2 f4 Kg1 f3 Kf2 h3 Kg3 Kd6 a6 f2 Kxf2 h2 Kg2 g3 a7
 37/57+	00:43	 569,165,249	13,210,901	+1.90	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 c5 Kb7 b5 f5 b6 f4 Kg2 g4 Kg1 f3 Kf2 h3 Kg3 Kc6 a6 Kxc5 a7 h2 Kxh2 f2 Kg2
 37/57+	00:44	 586,230,612	13,158,936	+1.99	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 b5 Kd6 a6 Kc7 c5 Kb8 c6 Ka7 c7
 37/57+	00:45	 601,666,629	13,116,492	+2.13	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 b5 Kd6 a6 Kc7 c5 f5 b6+ Kc6 a7 Kb7 c6+ Ka8 c7 g4+ Kh2
 37/57+	00:47	 618,204,615	13,083,418	+2.34	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 b5 Kd6 a6 Kc5 a7
 37/57+	00:49	 638,050,961	13,035,547	+2.65	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kb8 b5 Ka7 Kg2 g4 Kg1 f5 Kg2 f4 Kg1 g3 Kg2 Kb8 b6 Kc8 c6 h3+ Kxh3 Kb8 a7+ Ka8 c7
 37/57+	00:50	 660,090,316	13,035,216	+3.12	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kc8 c6 Kc7 a7 g4+ Kxg4
 37/57+	00:52	 682,999,905	13,029,873	+3.82	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kc6 b5+ Kd5 a7
 37/57+	00:57	 746,826,729	13,090,051	+6.45	Ke1 h5 Kf2 Kd7 a4 Kc6 a5 Kb5 b4 h4 Kg2 g5 c4+ Kc6 Kh3 Kc7 a6 f6 c5 Kc6 b5+ Kd5 a7
 37/57+	01:08	 908,977,173	13,261,221	+8.81	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 Ka7 b5 g5 c4 f5 c5 Kb7 a6+ Ka7 Kg3 g4 Kf4 h6 Kg3 h5 Kh2 Ka8 b6 Kb8 Kg2 Kc8 c6 f4 a7
 37/57	01:14	 989,392,778	13,389,714	+8.16	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 g6 Kf4 h4 Kg4 g5 Kxg5 h3
 38/57+	01:18	1,044,468,474	13,342,724	+8.22	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 f5 c5 g5 c6 h4 b5+ Kxb5 c7 h3 c8Q h2 Qxf5+ Ka6 Qg6+ Kb7 a6+ Kb8 Qg8+ Ka7 Qg7+ Kxa6 Qf6+
 38/57+	01:23	1,072,884,153	13,329,243	+8.29	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 f5 c5 Kb7 Kg3 Ka6 c6 Ka7 b5 g5 b6+ Ka6 c7 Kb7 a6+ Kxb6 c8Q h4+ Kh2 f4 a7
 38/57+	01:23	1,096,820,761	13,321,116	+8.38	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 g6 Kg2 g5 Kg3 h4+ Kh3 f5 c5 Kb5 Kh2 g4 Kg2 f4 Kg1 h3 Kh2 f3 Kg3 f2 Kxf2 h2 Kg2 g3 Kh1 Kc6 a6 Kc7 Kg2 Kc6 b5+ Kc7 b6+ Kc6 a7 Kb7 c6+ Kxb6 a8Q
 38/57+	01:29	1,189,408,240	13,366,089	+9.04	Ke2 Kd7 a4 Kc6 a5 Kb7 b4 Ka6 Kf3 h5 c4 g6 Kg2 g5 Kg3 h4+ Kh3 f5 c5 Kb5 Kh2 g4 Kg2 f4 Kg1 h3 Kh2 f3 Kg3 f2 Kxf2 h2 Kg2 g3 Kh1 Kc6 a6 Kc7 Kg2 Kc6 b5+ Kc7 b6+ Kc6 a7 Kb7 c6+ Kxb6 a8Q
 38/57+	01:37	1,319,410,797	13,500,709	+9.51	Ke2 Kd7 a4 Kc6 c4 Kb7 Kf3 h5 Kg3 f5 a5 Ka6 b4 g6 Kg2 g5 Kg3 f4+ Kf2 h4 c5 h3 c6 Ka7 b5 h2 Kg2 h1N Kxh1 f3 b6+ Ka6 c7 Kb7 a6+ Kxb6 c8Q f2 Qd8+ Kc6 Qf6+
 38/57+	01:41	1,387,475,216	13,643,897	+10.21	Ke2 Kd7 a4 Kc6 c4 Kb7 Kf3 h5 Kg3 f5 a5 Ka6 b4 g6 c5 Kb5 Kf3 Kxb4 a6 g5 a7 g4+ Kg3 Kb5 a8Q Kc4 c6 h4+ Kxh4 Kd4 c7
 38/57+	01:47	1,490,733,412	13,873,611	+11.26	Ke2 Kd7 a4 Kc6 c4 Kb7 Kf3 h5 Kg3 f5 a5 Ka6 b4 g6 Kg2 g5 Kg3 f4+ Kf2 h4 c5 h3 c6 Ka7 b5 h2 Kg2 h1N Kxh1 f3 b6+ Ka6 c7 Kb7 a6+

I ran it on Crafty and it also can see this now. I remember when we were trying to get position learning to solve this, but was never very successful...